<HTML>
<head>
<script language="javascript">
function tellmemybrowser() {
 alert("appName: " + navigator.appName + " and appCodeName " + navigator.appCodeName + "navigator.userAgent:" + navigator.userAgent);
}
</script>
</head>

<BODY onload="tellmemybrowser();">
Yo
</BODY>
</HTML> 